昨天运行的应用程序今天不起作用。我还是不明白自己做错了什么。问题是，我正在调用以下代码片段，但我无法激活它。有什么问题？
EDIT1： 吐司有效但为什么它中的粒子不起作用？
public class PermissionsActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_permissions);
}
@Override
protected void onStart() {
super.onStart();
initWidget();
}
private void initWidget() {
Button permission = (Button) findViewById(R.id.permission);
permission.setOnClickListener(this);
Button accessibility = (Button) findViewById(R.id.accessibility);
accessibility.setOnClickListener(this);
LinearLayout permissionLayout = (LinearLayout) findViewById(R.id.permission_layout);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
permissionLayout.setVisibility(View.GONE);
} else {
permissionLayout.setVisibility(View.VISIBLE);
}
}
private void goToPassword() {
if (SharedPreferenceUtil.readIsNumModel()) {
startActivity(new Intent(this, NumberCheckActivity.class));
finish();
} else {
startActivity(new Intent(this, GestureCheckActivity.class));
finish();
}
SharedPreferenceUtil.editIsFirst(false);
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case 2909: {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
ToastUtils.showToast("Permission allowed.");
} else {
ToastUtils.showToast("Please allow permission");
}
return;
}
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.permission:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!Settings.System.canWrite(this)) {
requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 2909);
} else {
}
} else {
ToastUtils.showToast("Success");
}
break;
case R.id.accessibility:
if (!MyConstants.isPermissionOk(PermissionsActivity.this)) {
PermissionsActivity.this.startActivity(new Intent("android.settings.USAGE_ACCESS_SETTINGS"));
ToastUtils.showToast("Please find App Locker in this menu and enable it.");
} else {
ToastUtils.showToast("Accessibility enabled");
}
break;
default:
break;
}
}
protected void onResume() {
super.onResume();
goToNextScreen();
}
private void goToNextScreen() {
if (Build.VERSION.SDK_INT >= 23) {
if (MyConstants.isPermissionOk(PermissionsActivity.this) && Settings.System.canWrite(this)) {
goToPassword();
}
}
ToastUtils.showToast("onResume Working?");
}
}
问题已修复 - 请查看最佳解决方案：
public class PermissionsActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_permissions);
}
@Override
protected void onStart() {
super.onStart();
initWidget();
}
private void initWidget() {
Button permission = (Button) findViewById(R.id.permission);
permission.setOnClickListener(this);
Button accessibility = (Button) findViewById(R.id.accessibility);
accessibility.setOnClickListener(this);
LinearLayout permissionLayout = (LinearLayout) findViewById(R.id.permission_layout);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
permissionLayout.setVisibility(View.GONE);
} else {
permissionLayout.setVisibility(View.VISIBLE);
}
}
private void goToPassword() {
if (SharedPreferenceUtil.readIsNumModel()) {
startActivity(new Intent(this, NumberCheckActivity.class));
finish();
} else {
startActivity(new Intent(this, GestureCheckActivity.class));
finish();
}
SharedPreferenceUtil.editIsFirst(false);
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case 2909: {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
ToastUtils.showToast("Permission allowed.");
} else {
ToastUtils.showToast("Please allow permission");
}
return;
}
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.permission:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!Settings.System.canWrite(this)) {
requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 2909);
} else {
ToastUtils.showToast("Success");
}
} else {
ToastUtils.showToast("Success");
}
break;
case R.id.accessibility:
if (!MyConstants.isPermissionOk(PermissionsActivity.this)) {
PermissionsActivity.this.startActivity(new Intent("android.settings.USAGE_ACCESS_SETTINGS"));
ToastUtils.showToast("Please find App Locker in this menu and enable it.");
} else {
ToastUtils.showToast("Accessibility enabled");
}
break;
default:
break;
}
}
protected void onResume() {
super.onResume();
goToNextScreen();
}
private boolean checkIfAlreadyhavePermission() {
int result = ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE);
if (result == PackageManager.PERMISSION_GRANTED) {
return true;
} else {
return false;
}
}
private void goToNextScreen() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (MyConstants.isPermissionOk(PermissionsActivity.this) && checkIfAlreadyhavePermission() ) {
goToPassword();
}
}else{
goToPassword();
}
}
}