返回系统Home桌面

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        findViewById(R.id.start_intent).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_MAIN);
                intent.addCategory(Intent.CATEGORY_HOME);
                startActivity(intent);
            }
        });
    }
}

运行上面程序，点击按钮即可返回Home桌面。