Android isInEditMode()无法识别
我有一个简单的默认Android isInEditMode()无法识别,android,android-layout,android-studio,Android,Android Layout,Android Studio,我有一个简单的默认MainActivity,它在编辑器中的抽屉会导致渲染问题,因为无法膨胀某些元素。通常我在这些情况下使用isInEditMode() 下面是该类的代码: import android.os.Bundle; import android.support.design.widget.FloatingActionButton; import android.support.design.widget.Snackbar; import android.view.View; import
MainActivity
,它在编辑器中的抽屉会导致渲染问题,因为无法膨胀某些元素。通常我在这些情况下使用isInEditMode()
下面是该类的代码:
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
if(!isInEditMode()){
getMenuInflater().inflate(R.menu.home, menu);
return true;
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.nav_camera) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
是用于查看类的方法,您正在扩展类的类中使用它。只有在活动内部的现有视图中调用它时,才会识别它
您可能会获得对内容视图的引用
View contentView = this.findViewById(android.R.id.content).getRootView();
并为此调用isInEditMode
contentView.isInEditMode();
是用于查看类的方法,您正在扩展类的类中使用它。只有在活动内部的现有视图中调用它时,才会识别它
您可能会获得对内容视图的引用
View contentView = this.findViewById(android.R.id.content).getRootView();
并为此调用isInEditMode
contentView.isInEditMode();
只是澄清一下,isInEditMode
不会检查用户是否在editText
@AbAppletic中。我不明白您澄清的原因。谁谈论过editText???只是一个澄清,isInEditMode
没有检查用户是否在editText
@AbAppletic中。我还不明白你澄清的原因。谁谈论过editText???在这个场景中有没有使用它的方法?@AndreaF我想如果你使用yourView.isInEditMode()
它会起作用吗?AndreaF我想如果你使用yourView.isInEditMode()
它会起作用