have 4 activity : Main Activity,p1,p2,p3
my resume button not working . i want when i click in resume button app open my last activity .
for example : when in p2 click go to main , then in main when click resume , p2 open . here is my code :
Main Activity :
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_page);
Button resume = (Button) findViewById(R.id.resume);
Button next = (Button) findViewById(R.id.next);
Button exit = (Button) findViewById(R.id.exit);
resume.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SharedPreferences myPref = getSharedPreferences("APP_SHARED_PREF", Context.MODE_PRIVATE);
String lastActivity= myPref.getString("lastactivity","");
try {
Intent fooActivity = new Intent(MainActivity.this,Class.forName(lastActivity));
startActivity(fooActivity);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
});
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, p1.class);
startActivity(intent);
}
});
exit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
moveTaskToBack(true);
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(1);
}
});
}
}
XML layout :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:text="resume"
android:layout_width="wrap_content"
android:id="@+id/resume"
android:layout_height="wrap_content" />
<Button
android:text="next"
android:id="@+id/next"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="@+id/exit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="exit"/>
</LinearLayout>
p1 :
public class p1 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.p1);
Button next = (Button) findViewById(R.id.next);
Button home=(Button)findViewById(R.id.home);
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(p1.this, p2.class);
startActivity(intent);
}
});
home.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(p1.this, MainActivity.class);
startActivity(intent);
}
});
}
private void storeCurrentActivity(){
SharedPreferences myPref =getSharedPreferences("APP_SHARED_PREF", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = myPref.edit();
editor.putString("lastactivity", this.getClass().getSimpleName());
editor.commit();
}
@Override
public void onResume(){
super.onResume();
storeCurrentActivity();
}
}
XML :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:text="next"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/next"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="page 1"/>
<Button
android:text="go in main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/home"/>
</LinearLayout>
and p2,p3 like p1 and this my manifast :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.er.myapplication">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".p1"
android:label="@string/title_activity_main2"
android:theme="@style/AppTheme.NoActionBar" />
<activity
android:name=".p2"
android:label="@string/title_activity_p2"
android:theme="@style/AppTheme.NoActionBar" />
<activity
android:name=".p3"
android:label="@string/title_activity_p3"
android:theme="@style/AppTheme.NoActionBar"/>
</application>
</manifest>
