Knowing info of current activity
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| public class BaseActivity extends Activity {
private final String TAG = getClass().getSimpleName();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d("BaseActivity", TAG);
}
}
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Finish all activities
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| public class ActivityCollector {
public static List<Activity> activities = new ArrayList<Activity>();
public static void addActivity(Activity activity) {
activities.add(activity);
}
public static void removeActivity(Activity activity) {
activities.remove(activity);
}
public static void finishAll() {
for (Activity activity : activities) {
if (!activity.isFinishing()) {
activity.finish();
}
}
}
}
public class BaseActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(TAG, "Msg");
ActivityCollector.addActivity(this);
}
@Override
protected void onDestroy() {
super.onDestroy();
ActivityCollector.removeActivity(this);
}
}
public class ThirdActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d("ThirdActivity", "Task id is " + getTaskId());
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.third_layout);
Button button = (Button) findViewById(R.id.button);
button3.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
ActivityCollector.finishAll();
}
});
}
}
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Start a activity
Old school
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| Intent intent = new Intent(FirstActivity.this, SecondActivity.class);
intent.putExtra("param1", "data1");
intent.putExtra("param2", "data2");
startActivity(intent);
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Do this
Define a method in the target activity
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| public class SecondActivity extends BaseActivity {
public static void actionStart(Context context, String data1, String data2) {
Intent intent = new Intent(context, SecondActivity.class);
intent.putExtra("param1", data1);
intent.putExtra("param2", data2);
context.startActivity(intent);
}
……
}
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Then
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| button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
SecondActivity.actionStart(FirstActivity.this, "data1", "data2");
}
});
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