Intent intent = new Intent(MainActivity.this,HomeActivity.class);
startActivity(intent);
Intent intent = new Intent();
intent.setClass(MainActivity.this,HomeActivity.class);
startActivity(intent);
Intent intent = new Intent();
ComponentName componentName = new ComponentName(MainActivity.this,HomeActivity.class);
intent.setComponent(componentName);
startActivity(intent);
startActivity(new Intent(MainActivity.this,HomeActivity.class));
Button button = (Button) findViewById(R.id.writeButton);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
setContentView(R.layout.activity_write);
Intent intent = new Intent(MainActivity.this,WriteActivity.class);
startActivity(intent);
}
});