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171 lines
5.1 KiB
171 lines
5.1 KiB
4 years ago
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package org.purplei2p.i2pd;
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import android.Manifest;
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import android.app.Activity;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.os.Bundle;
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import android.view.View;
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import android.widget.Button;
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import android.widget.TextView;
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import java.lang.reflect.Method;
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//dangerous perms, per https://developer.android.com/guide/topics/permissions/normal-permissions.html :
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//android.permission.WRITE_EXTERNAL_STORAGE
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public class I2PDPermsAskerActivity extends Activity {
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private static final int PERMISSION_WRITE_EXTERNAL_STORAGE = 0;
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private Button button_request_write_ext_storage_perms;
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private TextView textview_retry;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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//if less than Android 6, no runtime perms req system present
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if (android.os.Build.VERSION.SDK_INT < 23) {
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startMainActivity();
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return;
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}
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setContentView(R.layout.activity_perms_asker);
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button_request_write_ext_storage_perms = (Button) findViewById(R.id.button_request_write_ext_storage_perms);
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textview_retry = (TextView) findViewById(R.id.textview_retry);
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button_request_write_ext_storage_perms.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View view) {
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request_write_ext_storage_perms();
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}
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});
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request_write_ext_storage_perms();
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}
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private void request_write_ext_storage_perms() {
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textview_retry.setVisibility(TextView.GONE);
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button_request_write_ext_storage_perms.setVisibility(Button.GONE);
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Method methodCheckPermission;
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Method method_shouldShowRequestPermissionRationale;
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Method method_requestPermissions;
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try {
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methodCheckPermission = getClass().getMethod("checkSelfPermission", String.class);
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method_shouldShowRequestPermissionRationale =
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getClass().getMethod("shouldShowRequestPermissionRationale", String.class);
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method_requestPermissions =
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getClass().getMethod("requestPermissions", String[].class, int.class);
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} catch (NoSuchMethodException e) {
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throw new RuntimeException(e);
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}
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Integer resultObj;
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try {
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resultObj = (Integer) methodCheckPermission.invoke(
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this, Manifest.permission.WRITE_EXTERNAL_STORAGE);
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} catch (Throwable e) {
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throw new RuntimeException(e);
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}
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if (resultObj != PackageManager.PERMISSION_GRANTED) {
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// Should we show an explanation?
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Boolean aBoolean;
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try {
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aBoolean = (Boolean) method_shouldShowRequestPermissionRationale.invoke(this,
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Manifest.permission.WRITE_EXTERNAL_STORAGE);
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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if (aBoolean) {
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// Show an explanation to the user *asynchronously* -- don't block
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// this thread waiting for the user's response! After the user
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// sees the explanation, try again to request the permission.
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showExplanation();
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} else {
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// No explanation needed, we can request the permission.
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try {
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method_requestPermissions.invoke(this,
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new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
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PERMISSION_WRITE_EXTERNAL_STORAGE);
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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}
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} else startMainActivity();
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}
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@Override
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public void onRequestPermissionsResult(int requestCode,
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String permissions[], int[] grantResults) {
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switch (requestCode) {
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case PERMISSION_WRITE_EXTERNAL_STORAGE: {
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// If request is cancelled, the result arrays are empty.
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if (grantResults.length > 0
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&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
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// permission was granted, yay! Do the
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// contacts-related task you need to do.
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startMainActivity();
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} else {
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// permission denied, boo! Disable the
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// functionality that depends on this permission.
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textview_retry.setText(R.string.permDenied);
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textview_retry.setVisibility(TextView.VISIBLE);
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button_request_write_ext_storage_perms.setVisibility(Button.VISIBLE);
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}
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}
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// other 'case' lines to check for other
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// permissions this app might request.
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}
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}
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private void startMainActivity() {
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startActivity(new Intent(this, I2PDActivity.class));
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finish();
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}
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private static final int SHOW_EXPLANATION_REQUEST = 1; // The request code
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private void showExplanation() {
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Intent intent = new Intent(this, I2PDPermsExplanationActivity.class);
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startActivityForResult(intent, SHOW_EXPLANATION_REQUEST);
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}
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@Override
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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// Check which request we're responding to
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if (requestCode == SHOW_EXPLANATION_REQUEST) {
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// Make sure the request was successful
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if (resultCode == RESULT_OK) {
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// Request the permission
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Method method_requestPermissions;
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try {
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method_requestPermissions =
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getClass().getMethod("requestPermissions", String[].class, int.class);
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} catch (NoSuchMethodException e) {
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throw new RuntimeException(e);
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}
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try {
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method_requestPermissions.invoke(this,
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new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
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PERMISSION_WRITE_EXTERNAL_STORAGE);
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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} else {
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finish(); //close the app
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}
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}
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}
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}
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